JSONSerializer.php

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<?php

declare(strict_types=1);

namespace ILIAS\FileDelivery\Token\Serializer;

class JSONSerializer implements Serializer
{
    public function __construct()
    {
    }

    public function serializePayload(array $payload_data): string
    {
        return json_encode($payload_data, JSON_THROW_ON_ERROR);
    }

    public function unserializePayload(string $payload_string): array
    {
        return json_decode($payload_string, true, 512, JSON_THROW_ON_ERROR);
    }

    public function serializeValidity(?int $valid_until_timestamp): string
    {
        return (string) ($valid_until_timestamp ?? '');
    }

    public function unserializeValidity(string $valid_until_string): ?int
    {
        return $valid_until_string === '' ? null : (int) $valid_until_string;
    }
}